Abstract Present study highlights the behavior of weir crest head and width parameter on discharge coefficient a compound broad crested (CBC) weir. Computational fluid dynamics model (CFD) is validated with laboratory experimental investigations. In analysis through weirs, upstream over (h) crucial, where result mainly dependent upon length (L) in transverse direction to flow, water depth from ...

With the continuous operation of check dams, silting elevation whole dam gradually increases. When height is close to broad-crested weir, it will result in a large change hydraulic characteristics original flow pattern. For subsequent reinforcement work, necessary know how excessive sediment deposition affects overflow from weir into spillway. However, few studies about discharge coefficients a...

The current investigation evaluated the discharge coefficient of a combined compound rectangular broad-crested-weir (BCW) gate (Cdt) using computational fluid dynamics (CFD) modeling approach and soft computing models. First, CFD was applied to experimental data 61 BCW gates were numerically simulated by resolving Reynolds-averaged Navier–Stokes equations stress turbulence Then, six data-driven...

Laboratory experiments were carried out to investigate the hydraulic characteristics of full-cycle cosine and rectangular sharp-crested weirs in free flow condition. The head–discharge relationships determined theoretically discharge coefficients correlated with weir geometry for both rigid erodible bed conditions. proposed model showed higher comparison weirs. three-dimensional velocity profil...

The interest in Piano Key weirs (PKW) was increasing over the past years, both in terms of application and hydraulic research. Several systematic model test series were performed and published so far, originating from different hydraulic laboratories around the world. Therein, the key geometric parameters dominating the hydraulic capacity of PKWs were identified as developed crest length, trans...